Calculator: calculate the annual simple flat interest rate to negociate in order to earn a certain simple flat rate interest on the principal (money starting amount) by duration and additional transaction fees

Calculator: annual simple interest rate to negociate to earn a certain interest

Annual simple flat interest rate = (Simple flat rate interest × Number of days in a year) ÷ (Principal × Duration in days)

Latest calculated annual simple flat interest rates

Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 30,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 2008, to date: Oct 13, 2018, namely for a period of 3,938 days (129 Months and 12 Days) if the commission fee (withdrawal or payment) is 0%.Feb 21 05:39 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 10,500 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 5,000 units (Dollar, Euro, Pound, etc.), from date: Feb 03, 2017, to date: Feb 03, 2022, namely for a period of 1,826 days (60 Months) if the commission fee (withdrawal or payment) is 0%.Feb 21 05:30 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Jun 23, 2018, to date: Jul 23, 2018, namely for a period of 30 days if the commission fee (withdrawal or payment) is 0%.Feb 21 05:14 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 1,515.66 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 18.25 units (Dollar, Euro, Pound, etc.), from date: Dec 17, 2017, to date: Dec 05, 2018, namely for a period of 353 days (12 Months without 12 Days) if the commission fee (withdrawal or payment) is 0%.Feb 21 04:52 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 32,293.4 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 384.34 units (Dollar, Euro, Pound, etc.), from date: Apr 18, 2008, to date: May 20, 2008, namely for a period of 32 days (1 Month and 2 Days) if the commission fee (withdrawal or payment) is 0%.Feb 21 04:39 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 10 units (Dollar, Euro, Pound, etc.), from date: May 31, 2017, to date: Jun 30, 2017, namely for a period of 30 days if the commission fee (withdrawal or payment) is 0%.Feb 21 04:34 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 275 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Feb 16, 2018, to date: Feb 16, 2019, namely for a period of 365 days (12 Months) if the commission fee (withdrawal or payment) is 297%.Feb 21 04:33 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 15,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 16,125 units (Dollar, Euro, Pound, etc.), from date: May 13, 2018, to date: May 13, 2019, namely for a period of 365 days (12 Months) if the commission fee (withdrawal or payment) is 0%.Feb 21 04:32 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Jul 08, 2017, to date: Oct 08, 2018, namely for a period of 457 days (15 Months) if the commission fee (withdrawal or payment) is 0.2%.Feb 21 04:11 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 30,654 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 25,971.46 units (Dollar, Euro, Pound, etc.), from date: Mar 20, 2009, to date: Nov 30, 2014, namely for a period of 2,081 days (68 Months and 10 Days) if the commission fee (withdrawal or payment) is 0%.Feb 21 03:38 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 1 units (Dollar, Euro, Pound, etc.), from date: Jun 03, 2017, to date: Sep 03, 2017, namely for a period of 92 days (3 Months) if the commission fee (withdrawal or payment) is 0%.Feb 21 03:16 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Dec 12, 2017, to date: Jan 12, 2018, namely for a period of 31 days if the commission fee (withdrawal or payment) is 0%.Feb 21 02:46 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 500 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 6,500,000 units (Dollar, Euro, Pound, etc.), from date: Jan 01, 2018, to date: Jul 01, 2018, namely for a period of 181 days (6 Months) if the commission fee (withdrawal or payment) is 0%.Feb 21 02:37 UTC (GMT)
All annual simple flat interest rates calculated by users


How to calculate / negociate the simple flat interest rate of a principal - initial starting amount of money lent, deposited or borrowed, in order to collect or pay a certain simple flat rate interest by the duration and any additional transaction fees (withdrawal, payment in advance, etc.).

Annual simple flat rate interest formula:

  • I = S × p% × n

  • I = n years simple interest charged
  • S = initial amount (principal)
  • p% = annual simple flat interest rate (percentage of the principal, charged as interest)
  • n = number of years of the lending or borrowing the money
  • Formula of the simple flat interest rate applied on the principal - initial starting amount of money lent, deposited or borrowed, in order to earn a simple flat annual rate:

  • p% = I ÷ (S × n)

Examples of how to calculate the simple flat interest rate on the principal amount in order to earn a certain simple flat rate interest:

  • 1) What is the simple flat interest rate of the principal S = 20,000 units that has to be lent, deposited or borrowed, for a period of n = 5 years, if the simple flat rate interest collected or paid D = 3,500 units?
    Answer:
    p% = I ÷ (S × n) = 3,500 ÷ (20,000 × 5) = 3,500 ÷ 100,000 = 3.5 ÷ 100 = 3.5%
  • 2) What is the simple flat interest rate of a principal S = 5,000 units, that has to be lent, deposited or borrowed, for a period of n = 3 years, if the simple flat rate interest collected or paid D = 300 units?
    Answer:
    p% = I ÷ (S × n) = 300 ÷ (5,000 × 3) = 300 ÷ 15,000 = 3 ÷ 150 = 1 ÷ 50 = 2 ÷ 100 = 2%

Annual simple flat interest rate formula calculated for a period of n years:

  • Simple flat interest rate, p% = I ÷ (S × n)
  • Interest, I = S × p% × n
  • Principal, S = I ÷ (p% × n)
  • Number of years of the period of the deposit, lending or borrowing, n = I ÷ (S × p%)

Formula of the simple flat interest rate of the principal for an annual simple flat rate interest calculated for a period of m months:

  • Simple flat interest rate, p% = (12 × I) ÷ (S × m)
  • Interest, I = (S × p% × m) ÷ 12
  • Principal, S = (12 × I) ÷ (p% × m)
  • Number of months of the period, m = (12 × I) ÷ (S × p%)

Formula of the simple flat interest rate of a principal for an annual simple flat rate interest calculated for a period of d days:

  • Simple flat interest rate, p% = (365 × I) ÷ (S × d)
  • Interest, I = (S × p% × d) ÷ 365
  • Principal, S = (365 × I) ÷ (p% × d)
  • Number of days of the period, d = (365 × I) ÷ (S × p%)

More examples of how the simple flat interest rate of a principal for a simple flat rate interest formula works:

  • 1) Calculate the simple flat interest rate of the initial amount S = 400 units that would generate a simple flat rate interest I = 6.67 units in m = 5 months.
    Answer:
    p% = (12 × I) ÷ (S × m) = (12 × 6.67) ÷ (400 × 5) = (12 × 6.67) ÷ 2,000 = 80 ÷ 2,000 = 4%
  • 2) Calculate the simple flat interest rate of the initial amount S = 400 units that would generate a simple flat rate interest I = 7.5 units in m = 5 months.
    Answer:
    p% = (12 × I) ÷ (S × m) = (12 × 7.5) ÷ (400 × 5) = 90 ÷ 2,000 = 4.5%.